Document Detail

Placenta/birthweight ratio and perinatal outcome: a retrospective cohort analysis.
MedLine Citation:
PMID:  21332633     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: The placenta weight/birthweight (PW/BW) ratio has been shown to be associated with certain long-term fetal outcomes; however, its association with short-term outcomes has not received much attention. Our aim was to assess the correlation between the PW/BW ratio and short-term adverse obstetrics outcomes in full-term, appropriate-for-gestational-age (AGA) newborns.
DESIGN: Retrospective cohort study analysis using data from the McGill Obstetrical and Neonatal Database.
SETTING: McGill University Health Centre in Montreal Canada.
METHODS: Three groups of full-term AGA neonates were created, according to their PW/BW ratio (high, normal and low), to be compared. Our primary outcome was the admission rate to the neonatal intensive care unit (NICU), and secondary outcomes included an Apgar score < 7 at 5 minutes, cord PH < 7.0, cord base excess (BE) ≤ 12, respiratory distress syndrome (RDS), patent ductus arteriosus (PDA), occurrence of apnoea episodes, breech presentation at delivery, caesarean section rate and status in discharge home. A logistic regression model was instituted to investigate the predictors for adverse obstetrics outcomes.
RESULTS: Compared with the group with normal PW/BW ratios, the high PW/BW ratio group was associated with increased rates of admission to the NICU, of Apgar scores < 7 at 5 minutes, of breech presentation and caesarean section. On the contrary, the low PW/BW ratio group showed decreased rates of NICU admission, breech presentation and caesarean section.
CONCLUSIONS: A high PW/BW ratio is significantly correlated with short-term adverse perinatal outcomes. This ratio may be used as a new and simple warning sign to predict the possibility of short-term health risks for newborns.
F Shehata; I Levin; A Shrim; B Ata; B Weisz; R Gamzu; B Almog
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Publication Detail:
Type:  Journal Article     Date:  2011-02-18
Journal Detail:
Title:  BJOG : an international journal of obstetrics and gynaecology     Volume:  118     ISSN:  1471-0528     ISO Abbreviation:  BJOG     Publication Date:  2011 May 
Date Detail:
Created Date:  2011-04-12     Completed Date:  2011-09-13     Revised Date:  2011-11-15    
Medline Journal Info:
Nlm Unique ID:  100935741     Medline TA:  BJOG     Country:  England    
Other Details:
Languages:  eng     Pagination:  741-7     Citation Subset:  AIM; IM    
Copyright Information:
© 2011 The Authors BJOG An International Journal of Obstetrics and Gynaecology © 2011 RCOG.
Obstetrics and Gynecology Department, McGill University Health Centre, McGill University, Montreal, QC, Canada.
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MeSH Terms
Apgar Score
Birth Weight / physiology*
Breech Presentation
Cesarean Section / statistics & numerical data
Ductus Arteriosus, Patent / etiology
Gestational Age
Hydrogen-Ion Concentration
Infant, Newborn
Intensive Care / statistics & numerical data
Organ Size
Perinatal Mortality
Placenta / anatomy & histology*
Pregnancy Outcome
Respiratory Distress Syndrome, Newborn / etiology
Retrospective Studies
Term Birth / physiology
Comment In:
BJOG. 2011 Nov;118(12):1539-40; author reply 1540   [PMID:  21988849 ]

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